A program to explain RANDOM ACCESS FILES

#include <stdio.h>
#include <stdlib.h>
 
void main()
{
    int k;
    long int n;
    char c, ch;
    FILE *fp;
 
    fp = fopen("RANDOM", "w");
    if (fp == NULL)
    {
        printf("Error: unable to create RANDOM\n");
        exit(1);
    }
 
    printf("Type the content to store in RANDOM ... (Press CTRL+D to trigger EOF)\n\n");
    while ((c = getchar()) != EOF)
    {
        putc(c, fp);
    }
 
    printf("\nNumber of characters entered = %ld\n", ftell(fp));
    fclose(fp);
 
    fp = fopen("RANDOM", "r");
    n = 2L;
    k = fseek(fp, n, 0);
 
    printf("Character at position 2 = ");
    if (k == 0)
    {
        ch = getc(fp);
        putchar(ch);
        putchar('\n');
    }
    fclose(fp);
 
    printf("\n");
}